Christian vieman



0 VIEMAN.

ROTARY ROCKING CHAIR.

Patented Aug. 30,1881.

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-. Juveni e? I Ufirjs Zioon Vie-m an UNITED STATES PATENT OFFICE.

CHRISTIAN VIEMAN, OF MICHIGAN CITY, INDIANA, ASSIGNOB OF ONE-HALF TOHENRY W. JOHNSON, OF SAME PLACE.

ROTARY ROCKING-*CHAIR.

SPECIFICATION fOrming part of Letters Patent No. 246,431, dated August30, 1881.

Application filed January 26, 1880.

To all whom it may concern Be it known that I, CHRISTIAN VIEMAN, ofMichigan City, county of La Porte, and State of Indiana, have invented anew and useful Improvementin RotaryRocking-Ohairs, which is fully setforth and described in the following specification, reference being hadto the accompanying drawings, in which Figure 1 represents a sideelevation of a chair embodying my improvements; Fig. 2, a

rear view of the same; Fig. 3, a vertical section of the same on theline 00 00, Fig. 1; and Fig. 4, a transverse section of the same, takenon the line 3 3 Fig. 1, giving a plan view of the base of the chair.

My invention relates to that class of chairs which both rock and turn ona swivel; and it consists in an improved mode of attaching the chair toits base; also, in a fastening device to prevent the rocking of thechair when desired; and, also, in an improved mode of attaching bothchair and base to the standard or support, all of which Will behereinafter more fully explained, and pointed out definitely in theclaims.

In the drawings, A represents the chair proper, on the bottom of which,on each side, are attached the rockers a. These rockers are united attheir middle by a cross-bar, a.

B is the base of the chair, having upon its sides rocker-ways 1), formedof strips of rubber band tacked or otherwise firmly attached to the baseB. Underneath the base, at its center, is rigidly attached the hollowpin b 5 which fits into the socket of the standard, in

which it revolves when required.

0 is the standard or support, and is of the ordinary construction.

Tenons a are formed on the under side of the cross-bar a, just insidethe rockers, and which fit loosely into mortises b underneath, in thebase B, thus holding the chair in place and limiting the distance bothbackward and forward which the chair is permitted to rock.

D is a swivel-rod, which passes upward through holes in the centers ofthe standard 0, pin b base B, and cross-bar a. Wound around its lowerend is the coiled spring d, which is held in place by the head d on theend of the rod and shoulders 0 within the standard O.

E is a metallic sheath, fastened underneath the standard 0. The interiordiameter of this sheath is larger than that of the hole at the bottom,which is only sufficiently large to permit of the ready entry of theswivel-rod D with its head d. The interior recess thus formed is linedwith stifi paper or other suitable packing, e, to prevent the gratingnoise caused by the friction of the head d against another metallicsurface.

F is a short metallic bar, round at its ends and enlarged at its center,at which point the upper end of the swivel rod D passes up through ahole. This bar is raised a short .dis tance above the cross-bar a, andits ends rest in supports or bearings a attached to the top of thecross-bar a. A nut, d and washer d are placed on the upper end of theswivel D, holding it in place and furnishing a ready means for theadjustment of its length and the tension of the coiled spring (I.

To the rear of the base B is attached the shorthorizontal rod b havingits end flattened, so as to engage in rectangular holes 9 in the shortmetallic strap G, hinged to a staple underneath the back of thechair-seat A. Whenv the rod 1) is thus engaged in the strap G thechair-seat A is locked so that it cannot be rocked. When it is desiredto rock the chair the strap G is raised off the end of the rod b to ahorizontal position and swung around under the chair-seat into the catch9.

The construction above described is at once simple, cheap, and durable,combining in one the advantages of both a swivel and a rocking chair.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, iso 1. In a rotary rocking-chair, the seat A,provided with rockers a, in combination with the swiveling base B,provided with ways for the rockers, the standard 0, having a centraltube, and. the single swivel-rod D, substantially as and for the purposeset forth.

2. The combination of the seat A, provided with rockers a, cross-bar a,provided with tenons a, base B, having inortises b, swivel-rod D, bar F,supports a spring (I, and standard (J, substantially as described.

3. The combination of the seat A, provided with rockers a, cross-bar a,and tenons a, base B, provided with mortises b and rubber rockei-ways,b, the tubular pin 1) attached to the base, swivel rod D, prmided with ahead, d,

at its lower end, bar F, mounted loosely on supports a, standard 0, andspring 11, all ar- 10 ranged and operating substantially as described.

OHRISTIAN VIEMAN. Witnesses:

J. A. THORNTON, J ARED H. ORR.

